Payton's Crossword puzzle

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Across
  1. 2. 3rd layer of the atmosphere, where most meteorites burn up.
  2. 4. The second-lowest layer of Earth's atmosphere.
  3. 11. Any form of water that falls from clouds and reaches Earth's surface.
  4. 12. accomplishment of completing a job with minimum use of time and effort
  5. 14. The envelope of gases that surrounds Earth.
  6. 16. The lowest layer of Earth's atmosphere
  7. 18. when a warm air mass meets and replaces an existing cool air mass causing steady rain
  8. 19. of rising warm air that usually bring wet, stormy weather.
  9. 20. A mass of sinking cool air that usually bring fair weather.
Down
  1. 1. The process by which a gas changes to a liquid. Forms clouds.
  2. 3. stored energy
  3. 5. KE + PE = ME
  4. 6. A front where cold air moves in under a warm air mass.
  5. 7. The transfer of heat by the movement of a fluid or gas
  6. 8. A force that pulls objects toward each other
  7. 9. The condition of Earth's atmosphere at a particular time and place.
  8. 10. Energy of motion
  9. 13. A narrow belt of strong winds that blow in the upper troposphere
  10. 15. The outermost layer of Earth's atmosphere.
  11. 17. process by which water changes from a liquid into an atmospheric gas